Overview
The SN74LVC245APWR, produced by Texas Instruments, is an octal bus transceiver designed for asynchronous communication between data buses. This device operates over a wide voltage range from 1.65 V to 3.6 V, making it versatile for various applications. It features 3-state outputs and supports mixed-mode signal operation, allowing it to handle inputs and outputs at different voltage levels, such as 5-V input/output voltage with a 3.3-V VCC. The device includes direction control (DIR) and output enable (OE) inputs, enabling flexible data transmission and bus isolation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage Range | 1.65 | - | 3.6 | V |
| Input Voltage Range | 0 | - | 5.5 | V |
| Propagation Delay Time (tpd) at 3.3 V | 1 | 6.3 | 8.5 | ns |
| High-Level Input Voltage (VIH) | 1.7 | - | 2 | V |
| Low-Level Input Voltage (VIL) | 0.7 | - | 0.8 | V |
| High-Level Output Current (IOH) | -24 | - | - | mA |
| Low-Level Output Current (IOL) | 24 | - | - | mA |
| Operating Temperature Range | -40 | - | 125 | °C |
| ESD Protection | - | - | 2000 | V (Human-Body Model) |
| ESD Protection | - | - | 1000 | V (Charged-Device Model) |
Key Features
- Operates from 1.65 V to 3.6 V, making it suitable for a wide range of applications.
- Inputs accept voltages up to 5.5 V, allowing for mixed-mode signal operation.
- Maximum propagation delay time of 6.3 ns at 3.3 V.
- Typical output ground bounce (VOLP) less than 0.8 V at VCC = 3.3 V.
- Supports partial-power-down mode operation.
- Latch-up performance exceeds 250 mA per JESD 17.
- ESD protection exceeds JESD 22 – 2000-V Human-Body Model and 1000-V Charged-Device Model.
- Direction control (DIR) and output enable (OE) inputs for flexible data transmission and bus isolation.
Applications
- Cable Modem Termination Systems
- Servers
- LED Displays
- General-purpose data transmission and bus isolation in various digital systems.
Q & A
- What is the operating voltage range of the SN74LVC245APWR? The SN74LVC245APWR operates from 1.65 V to 3.6 V.
- What is the maximum propagation delay time at 3.3 V? The maximum propagation delay time at 3.3 V is 6.3 ns.
- Can the inputs handle voltages higher than the VCC? Yes, the inputs can accept voltages up to 5.5 V.
- What is the purpose of the DIR and OE inputs? The DIR input controls the direction of data transmission, and the OE input can be used to disable the device and isolate the buses.
- What is the ESD protection level of the SN74LVC245APWR? The device has ESD protection exceeding 2000-V Human-Body Model and 1000-V Charged-Device Model.
- What are some common applications of the SN74LVC245APWR? Common applications include Cable Modem Termination Systems, servers, LED displays, and general-purpose data transmission and bus isolation.
- What is the typical output ground bounce (VOLP) at VCC = 3.3 V? The typical output ground bounce (VOLP) is less than 0.8 V at VCC = 3.3 V.
- Does the SN74LVC245APWR support partial-power-down mode operation? Yes, it supports partial-power-down mode operation.
- What is the latch-up performance of the SN74LVC245APWR? The latch-up performance exceeds 250 mA per JESD 17.
- What is the operating temperature range of the SN74LVC245APWR? The operating temperature range is from -40°C to 125°C.
